"The girl is sleeping."
Wow the "es" tripped me up to, this lesson of "is" "is" hard to catch. What is the grammar rules so we know the word has "is/are" built in to the word.
Several problems :
The subject of the sentence is "the girl", so 3d person singular. In that person, the verb "sum/esse" is conjugated "est". "Es" is for 2d person singular.
Latin does not have a simple and a continuous presents which means that "The girl sleeps" and "The girl is sleeping" will both be translated the same way: "Puella dormit".
- In a real text, the context would allow you to determine whether that sentence is more likely to be understood in a simple present or a continuous present way.